Published in paper and on-line annually beginning in 2001, Argentus is a general science fiction 'zine. Occasionally an on-line only “Special Edition” is published which focuses on a specific theme. So far these have included science fiction fans and authors on game shows (2005), con-running (2009), and the completion of Neptune’s first orbit (2011). The regular 2005 issue contained writing by authors who shared Silver's alliterative initials.

Each issue contains numerous articles on a variety of topics, which can range from a look at silent film comedians to the tolerance of science fiction fans. The final section of each issue is entitled a "mock section," in which writers are asked to write an entry based on a theme, such as reviewing a fictitious version of a film based on a favorite book. The mock section is separated from the main body of the 'zine by a letter column.